<!DOCTYPE HTML>
<html>
<body>
<iframe style="width:300px; height:600px; border:2px solid blue"
        srcdoc="<!DOCTYPE HTML>
                <html style='overflow:hidden'>
                <div style='height:450px'></div>
                <div style='height:200px; background:purple'>
                  <div style='display:inline-block; width:20px; height:20px; background:yellow;'></div>
                </div>"></iframe>
